CN221121151U

CN221121151U - Buoyancy opening and closing type exhaust valve

Info

Publication number: CN221121151U
Application number: CN202322988267.3U
Authority: CN
Inventors: 胡丽丽; 徐伟峰
Original assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Current assignee: Ningbo Amico Copper Valves Manufacturing Co Ltd
Priority date: 2023-11-07
Filing date: 2023-11-07
Publication date: 2024-06-11
Anticipated expiration: 2033-11-07

Abstract

The utility model discloses a buoyancy opening and closing type exhaust valve, which comprises a shell, an exhaust assembly, a mounting rod, floats and the like, wherein a plurality of floats are arranged on the mounting rod, a plurality of guide holes which are uniformly distributed around the center of each float are arranged on each float, the centers of the plurality of floats are fixedly connected on the mounting rod in series, so that the guide holes on every two adjacent floats are opposite to each other, the influence of the floating formed by the floats driven by the buoyancy can be eliminated through the plurality of guide holes in the lifting process, and the plurality of floats are combined to form a center serial structure which is formed by clamping and fixing the plurality of floats on the mounting rod through grooves, so that the impact of the buoyancy on the mounting positions of the floats and the mounting rod is effectively reduced, the floats are prevented from loosening and falling off, the proper distance between the floats and an exhaust port is ensured, the water seepage phenomenon is avoided, and the normal use of the exhaust valve is ensured; the improved exhaust valve also has the advantages of reliable structure, excellent service performance and the like.

Description

Buoyancy opening and closing type exhaust valve

Technical Field

The utility model relates to an exhaust valve structure of an auxiliary element of a pipeline system, in particular to a buoyancy opening and closing type exhaust valve.

Background

In the operation process of the heating and ventilation pipeline system, air dissolved in medium water can be gradually separated from water along with the temperature rise to form bubbles, and when the gas formed by the bubbles gathers too much, the normal operation of the pipeline system can be affected. The air exhaust valve which uses the buoyancy principle as an opening and closing mode is usually arranged at a high point or an elbow and the like of the whole pipeline system, and can remove redundant air in the pipeline system, thereby ensuring the normal operation of the pipeline system, improving the use efficiency of the pipeline system and reducing the energy consumption. At present, a common buoyancy opening and closing type exhaust valve uses a floating ball as a buoyancy lifting opening and closing element, and because the floating ball is a spherical part, the floating ball is easily influenced by water pressure in a pipeline system and the like in the lifting working process to be driven by buoyancy to form a drift, and the drift floating ball often impacts the installation position of the floating ball and an installation rod, so that the phenomenon that the floating ball loosens and falls off occurs, and the structural reliability is poor. Meanwhile, the floating ball can also cause the change of the lifting height in the lifting working process, namely the distance between the floating ball and the exhaust port is changed, once the lifting distance between the floating ball and the exhaust port is relatively short, the water seepage phenomenon caused by the fact that water passes over the floating ball and seeps out through the exhaust port during the exhaust process occurs, so that the service performance of the exhaust valve is reduced, and the normal use of the exhaust valve is also affected.

Disclosure of utility model

The utility model aims to overcome the defects of the prior art and provide the buoyancy opening and closing type exhaust valve which is reliable in structure and excellent in use performance.

The technical problems of the utility model are realized by the following technical scheme:

A buoyancy opening and closing type exhaust valve comprises a shell, a water inlet, an exhaust port, a mounting rod and an exhaust assembly, wherein a valve cavity is arranged in the shell; the exhaust assembly is provided with a connecting rod, the inner end of the connecting rod extends into the valve cavity and is in suspension connection with the upper end of the mounting rod; the installation rod is provided with a plurality of floats, each float is provided with a plurality of guide holes, the guide holes are uniformly distributed circumferentially around the center of the float, the centers of the plurality of floats are fixedly connected to the installation rod in series, and the guide holes on every two adjacent floats are opposite to each other.

Each floater is provided with a slot, the outer end of the slot penetrates through the outer circumference of the floater, the inner end of the slot extends to the center of the floater, and the plurality of floaters are clamped and fixed on the mounting rod through the slots to form a center string.

Each float is clamped on the mounting rod through a slot, and after the mounting rod contacts the inner end of the slot, the mounting rod is sealed and fixed by a sealing block to form a central string.

Each float is disc-shaped, and the slots are arranged in an extending mode according to the radius of the disc-shaped floats.

The shell consists of a valve body and a valve cover, the water inlet is arranged at the bottom of the valve body, the top of the valve body is open and is closed by a valve cover which is sealed by a detachable sealing cover, and the exhaust port is arranged at one side of the valve cover.

The valve body is internally provided with a filter screen, and the filter screen blocks and filters the water inlet.

The inner cavity wall of the valve body is provided with a circle of inner shoulder, and the filter screen is fixed on the inner shoulder through a retainer ring which is arranged in a tight fit manner.

The exhaust assembly comprises a valve seat, an exhaust hole, a valve rod, a valve clack and a connecting rod, wherein the valve seat is arranged in the exhaust port in a sealing way, the exhaust hole penetrates through the valve seat along the axial lead, the valve rod is arranged at the inner end of the valve seat, the valve clack is arranged on the valve rod, and the connecting rod is transversely arranged on the valve rod; a spring connected with each other is arranged between the outer end of the valve rod and the inner end of the valve seat; the float descends, and overcomes the elasticity of the spring to push the valve rod to incline through the mounting rod and the connecting rod, so as to drive the valve clack to open the exhaust hole; the float rises, and the spring returns to push the valve rod to drive the valve clack to close the exhaust hole.

The upper end of the installation rod is provided with a connecting hole, the lower end of the installation rod is provided with a drop-preventing piece, the connecting hole and a hook at the inner end of the connecting rod form suspension connection, the width of the drop-preventing piece is larger than the width of a groove on the floater, and the floater is limited to drop from the lower end of the installation rod in the axial direction.

Compared with the prior art, the utility model is mainly characterized in that a plurality of floats are arranged on the mounting rod, a plurality of guide holes are arranged on each float, the plurality of guide holes are circumferentially and uniformly distributed around the center of the float, and then the plurality of floats are fixedly connected on the mounting rod in series, and the guide holes on every two adjacent floats are opposite to each other in position and are communicated; obviously, compared with the traditional floating ball, the floating ball structure can eliminate the floating influence formed by the floating force driving the floating ball through the plurality of guide holes which are opposite to each other in position in the lifting working process, and is combined with the central serial structure formed by the plurality of floating balls which are clamped and fixed on the mounting rod through the grooves, so that the impact of the floating force on the mounting positions of the floating ball and the mounting rod can be effectively reduced, the phenomenon of loosening and falling of the floating ball is avoided, and the structure is more reliable; meanwhile, the float is eliminated from drifting in the lifting working process, so that the change of the lifting height of the float is avoided, namely the change of the distance between the float and the exhaust port is avoided, the float and the exhaust port are kept at a proper distance, the water seepage phenomenon caused by that water passes over the float and seeps out through the exhaust port during the exhaust process is avoided, the service performance of the exhaust valve is improved, and the normal use of the exhaust valve is also ensured.

Drawings

Fig. 1 is a cross-sectional view of the present utility model (exhaust assembly in a closed state).

Fig. 2 is a cross-sectional view of the present utility model (exhaust assembly in an open state).

Fig. 3 is a schematic structural view of the float.

Fig. 4 is a schematic diagram of a float structure with a seal disposed in a slot.

Fig. 5 is a schematic structural view of an exhaust assembly.

Fig. 6 is a schematic view of a first version of the construction of the mounting bar.

Fig. 7 is a schematic view of a second version of the construction of the mounting bar.

Fig. 8 is a schematic view of a third version of the construction of the mounting bar.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the drawings.

1-8, 1, Housing, 11, valve body, 12, valve cover, 13, water inlet, 14, exhaust, 15, valve cavity, 16, internal shoulder, 2, mounting stem, 21, connecting hole, 22, anti-drop member, 3, float, 31, slot, 32, guide hole, 33, sealing block, 4, retainer ring, 5, filter screen, 6, exhaust assembly, 61, valve seat, 611, exhaust hole, 62, valve rod, 63, valve clack, 64, spring, 65, connecting rod, 651, hook, 7.O type ring.

As shown in fig. 1 and 2, the buoyancy opening and closing type exhaust valve belongs to an auxiliary element of a pipeline system, is usually arranged at a high point or an elbow and the like of the whole pipeline system, and structurally comprises a shell 1 with a valve cavity 15 arranged inside, wherein the shell is composed of a valve body 11 and a valve cover 12; the bottom of the valve body 11 is provided with a water inlet 13, and the valve body is arranged on a pipeline system through the water inlet, so that medium water in the pipeline system enters the valve cavity 15 through the water inlet 13.

The valve body 11 in be equipped with filter screen 5, specific mounting structure is: the inner cavity wall of the valve body 11 is provided with a circle of inner shoulder 16, and the filter screen 5 is fixed on the inner shoulder 16 through the retainer ring 4 which is tightly arranged, so that the filter screen 5 can prevent medium water which enters the valve cavity 15 through the water inlet 13 from being filtered; of course, the filter screen 5 can be pressed below the retainer ring 4, and the filter screen 5 can be spot welded on the retainer ring 4 to be integrated, so that the installation is more convenient and the cost is reduced; in this way, the impurities in the water are blocked at the water inlet 13, so that the impurities can be prevented from entering the valve cavity 15 to influence the operation of the internal components, and even the exhaust port 14 of the exhaust valve is blocked.

The top of the valve body 11 is open and is closed by a valve cover 12 which is connected by detachable screw threads in a screwed mode, an O-shaped ring 7 is arranged at the joint of the valve body 11 and the valve cover to form a sealing cover, and an exhaust port 14 is arranged on one side of the valve cover 12.

Therefore, the water inlet 13 is arranged at the bottom of the shell 1 to form water inflow from bottom to top, and the air outlet 14 is arranged at the top of the shell 1 to discharge the gas accumulated in the pipeline system from the top to the outside.

The exhaust assembly 6 is arranged in the exhaust port 14 and comprises a valve seat 61, an exhaust hole 611, a valve rod 62, a valve clack 63 and a connecting rod 65, wherein the valve seat 61 is arranged in the exhaust port 14 in a sealing way through an O-shaped ring 7, the exhaust hole 611 penetrates through the axial line of the valve seat, the valve rod 62 is arranged at the inner end of the valve seat, the valve clack 63 is arranged on the valve rod, and the connecting rod 65 is transversely arranged on the valve rod; the exhaust hole 611 can be respectively communicated with the valve cavity 15 and the outside; a spring 64 connected with each other is arranged between the outer end of the valve rod 62 and the inner end of the valve seat 61, and the spring elastically drives a valve clack 63 on the valve rod 62 to contact and close an exhaust hole 611 in the valve seat 61 in a normal state, namely, the communication between the valve cavity 15 and the outside is interrupted; the inner end of the connecting rod 65 extends into the valve cavity 15 and is provided with a hook 651.

The valve cavity 15 is internally provided with a mounting rod 2 and a plurality of floats 3 which are connected with the mounting rod in series, three floats are selected in the embodiment, each float is disc-shaped, and a slot 31 and a plurality of guide holes 32 are formed in each float.

The slot 31 extends along the radius of the disc of the float 3, that is, the slot 31 extends along the radius, the outer end of the slot extends through the outer circumference of the float 3, and the inner end of the slot extends to the center of the float 3; the three floats 3 are clamped on the mounting rod 2 through the grooves 31, after the mounting rod contacts the inner ends of the grooves 31, the sealing blocks 33 are sealed and fixed in the grooves in a mode of melting or glue adhesion, so that the three floats 3 can form a central serial assembly on the mounting rod 2, and the floats 3 can be prevented from sliding out of the grooves 31 in the radial direction.

The guide holes 32 are formed into four waist-shaped holes in the embodiment, the four guide holes 32 are uniformly distributed circumferentially around the center of the floats 3, and when the centers of the three floats 3 are fixedly connected on the mounting rod 2 in series, the guide holes 32 on every two adjacent floats 3 are opposite in position and penetrate one by one.

Like this, adopt discoid appearance float 3 to and all be equipped with four guide holes 32 on every float, this kind of float structure compares traditional floater, and it can be in the lift course of working, and accessible position just gets rid of the float that four guide holes 32 that run through drive float 3 formed and wave the influence, and the center cluster dress structure that combines three float 3 to form by the fluting block to fix on installation pole 2 again just can effectively reduce the impact that the buoyancy produced to the installation department of float 3 and installation pole 2, avoids appearing the not hard up phenomenon that drops of float 3, and the structure is more reliable.

Moreover, the float 3 is not changed in lifting height in the lifting process, namely, the distance between the float 3 and the exhaust port 14 is not changed, so that the float 3 and the exhaust port 14 are kept at a proper distance, the water seepage phenomenon caused by that water passes through the float 3 and seeps out through the exhaust hole 611 of the exhaust component 6 in the exhaust port in the exhaust process is avoided, the service performance of the exhaust valve is improved, and the normal use of the exhaust valve is also ensured.

Of course, the number of the floats 3 is designed to be a plurality, and the number of the floats 3 required to be used can be selected according to actual conditions in the assembly process, that is, the lifting height of the floats 3 can be adjusted in advance by selecting the number of the floats 3, so that the purpose of adjusting the distance between the floats 3 and the exhaust port 14 is achieved, and the floats 3 and the exhaust port 14 are maintained at a proper distance.

The installation rod 2 is shown in fig. 6-8, and can be formed by processing a round bar, or by stamping a plate or bending a steel wire, wherein the forming is completed before the assembly, the upper end of the installation rod is provided with a connecting hole 21, and is in suspension connection with a hook 651 at the inner end of a connecting rod 65 through the connecting hole, the lower end of the installation rod 2 is provided with a drop-preventing piece 22, and the width of the drop-preventing piece is larger than the groove width of a groove 31 on the floater 3, so that the floater 3 is limited from falling off axially from the lower end of the installation rod 2.

The actual processing of the mounting rod 2 can be selected from the following three modes, wherein the first mode is that the lower end of the mounting rod 2 does not adopt a bending structure and is positioned by adopting a check ring for a shaft, which is also a common positioning mode, and only the mounting rod 2 needs to be properly thickened; the second is that the lower end of the installation rod 2 is of a thickened structure, when the float 3 is installed on the side, the float can be sealed and fixed by a sealing block 33 stuck by glue, and the float can be in a connection mode that one end of brass is enlarged and the other end is provided with a connecting hole 21 or in a stainless steel stamping mode; thirdly, firstly, a selected number of floats 3 are fixed into a whole by glue, and the uppermost floats 3 are connected in a soft way, because the floats 3 are raised too high due to the adoption of hard connection, the connecting rod 65 is easy to bend upwards, and sealing water leakage is caused. The three processing modes can realize the function of automatic exhaust, and have lower cost and extremely convenient assembly.

The working process of the utility model is as follows: when the medium water in the pipe system enters the valve cavity 15 from the water inlet 13, the float 3 floats up under the action of the water pressure, and the spring 64 keeps the same, namely, the valve clack 63 on the valve rod 62 is driven by the elasticity of the spring to contact and close the exhaust hole 611 in the valve seat 61.

When the gas in the medium water overflows and enters the valve cavity 15 where the valve cover 12 is positioned, the air pressure in the cavity is gradually increased along with the continuous entering of the gas, once the air pressure is higher than the water pressure in the valve cavity 15, the water surface is pushed to descend, the float 3 is driven to descend along with the water level, the mounting rod 2 provided with the float pulls the valve rod 62 to overcome the elastic force of the spring 64 through the connecting rod 65 to incline, the valve clack 63 is driven to open the exhaust hole 611 so as to discharge the gas to the outside through the exhaust hole, then the air pressure is gradually reduced, the water pressure is higher than the air pressure again, the water surface is also raised along with the air pressure, and the float 3 is synchronously raised, so that the spring 64 is reset to seal the exhaust hole 611 again; because the distance between the floater 3 and the exhaust port 14 is increased, the valve cavity 15 where the valve cover 12 is positioned is also increased, and the water pressure is insufficient to enable the medium water to flow to the exhaust hole 611, so that the water seepage phenomenon of the exhaust hole 611 can not occur.

The foregoing is merely a specific embodiment of the present utility model, and it should be understood by those skilled in the art that any structural design equivalent to the embodiment is included in the scope of the present utility model.

Claims

1. A buoyancy opening and closing type exhaust valve comprises a shell (1) internally provided with a valve cavity (15), a water inlet (13) arranged at the bottom of the shell, an exhaust port (14) arranged at the top of the shell, a mounting rod (2) arranged in the valve cavity (15) and an exhaust assembly (6) arranged in the exhaust port (14); the exhaust assembly (6) is provided with a connecting rod (65), the inner end of the connecting rod extends into the valve cavity (15) and is connected with the upper end of the installation rod (2) in a hanging manner, and the exhaust assembly is characterized in that a plurality of floats (3) are arranged on the installation rod (2), a plurality of guide holes (32) are formed in each float (3), the plurality of guide holes are uniformly distributed circumferentially around the center of each float (3), the centers of the plurality of floats (3) are fixedly connected to the installation rod (2) in a series manner, and the guide holes (32) on every two adjacent floats are directly opposite to each other.

2. The buoyancy opening and closing type exhaust valve according to claim 1, wherein each float (3) is provided with a slot (31), the outer end of the slot penetrates through the outer circumference of the float (3), the inner end of the slot (31) extends to the center of the float (3), and the plurality of floats (3) are clamped and fixed on the mounting rod (2) through the slots (31) to form a center serial connection.

3. A buoyancy open-close type exhaust valve according to claim 2, characterized in that each float (3) is clamped on the mounting rod (2) by a slot (31), and after the mounting rod contacts the inner end of the slot (31), the central string is formed by sealing and fixing by a sealing block (33).

4. A buoyancy open-close type exhaust valve according to claim 2, characterized in that each float (3) is disc-shaped, and the slots (31) are arranged to extend according to the radius of the disc-shaped float (3).

5. A buoyancy open-close type exhaust valve according to claim 1, characterized in that the housing (1) is composed of a valve body (11) and a valve cover (12), the water inlet (13) is arranged at the bottom of the valve body (11), the top of the valve body is open and is closed by a valve cover (12) which is detachably sealed, and the exhaust port (14) is arranged at one side of the valve cover (12).

6. A buoyancy open-close type exhaust valve according to claim 5, characterized in that a filter screen (5) is provided in the valve body (11) and the filter screen blocks the water inlet (13).

7. The buoyancy opening and closing type exhaust valve according to claim 6 is characterized in that an inner shoulder (16) is arranged on the inner cavity wall of the valve body (1), and the filter screen (5) is fixed on the inner shoulder (16) through a retainer ring (4) which is tightly arranged.

8. A buoyancy open-close type exhaust valve according to claim 1, characterized in that the exhaust assembly (6) comprises a valve seat (61) which is arranged in the exhaust port (14) in a sealing way, an exhaust hole (611) which penetrates along the axial line of the valve seat, a valve rod (62) which is arranged at the inner end of the valve seat, a valve clack (63) which is arranged on the valve rod and a connecting rod (65) which is arranged on the valve rod in a transverse way; a spring (64) connected with each other is arranged between the outer end of the valve rod (62) and the inner end of the valve seat (61); the floater (3) descends, and overcomes the elasticity of the spring (64) through the mounting rod (2) and the connecting rod (65) to push the valve rod (62) to incline so as to drive the valve clack (63) to open the exhaust hole (611); the float (3) rises, the spring (64) is reset to push the valve rod (62) to drive the valve clack (63) to close the exhaust hole (611).

9. A buoyancy open-close type exhaust valve according to claim 2, characterized in that the upper end of the mounting rod (2) is provided with a connecting hole (21), the lower end of the mounting rod is provided with a release stopping member (22), the connecting hole (21) and a hook (651) at the inner end of the connecting rod (65) form suspension connection, the width of the release stopping member (22) is larger than the groove width of a groove (31) on the floater (3), and the floater (3) is limited from axially falling off from the lower end of the mounting rod (2).